ithappens

systemctl stop mysqld systemctl set-environment MYSQLD_OPTS="--skip-grant-tables" systemctl start mysqld mysql -u root -p UPDATE mysql.user SET authentication_string = null where user='root'; FLUSH PRIVILEGES; quit mysql -u root -p (no password) alter user 'root'@'localhost' identified with caching_sha2_password by '변경할비밀번호'; FLUSH PRIVILEGES; quit systemctl stop mysqld systemctl unset-enviro..